Operating mechanism for switches



June 1936- H. J. FRANK E AL 2,042,777

OPERATING MECHANISM FOR SWITCHES Original Filed July 23, 1931 wwmgya zi (t & BY

Patented June 2, 1936 UNITED STATES OPERATING MECHANISM FOR SWITCHES Harrison .1. L. Frank, Joseph A. Messing, and William A. Harper, Detroit, Mich., assignors to Bulldog Electric Products Company, Detroit, Mich., a corporation of West Virginia Original application July 23, 1931, Serial No.

552,684, now Patent No. 1,931,319. Divided and application August 19, 1933, now Patent No. 1,973,618.

Serial No. 685,972, Divided and this application August 16, 1934, Serial No. 740,134

1 Claim.

The inventions of this application relate to operating mechanisms for switches of the base and head type or of the block and receptacle type as they are sometimes known, and this application is a division of our prior application Serial No. 685,972, filed August 19, 1933 now Patent No. 1,973,618, patented September 11, 1934, which is a division of Serial No. 1931, now Patent No. 1,931,319, patented Oct. 1'1, 1933.

The objects of the inventions of this application have been distinctly set forth in Patent #1,931,319, October 17, 1933, of which Patent 1,973,618, Sept. 11, 1934 is a division-of which this application is a division and need not here be reviewed. It can be said, however, that it is the purpose of this application to cover a specific embodiment of operating means shown herein and divided out from the prior application. This embodiment will readily be understood by those skilled in the art upon reference to the following description and the accompanying drawing, in which Figures 1 and 2am, respectively, an elevation and a top plan view of one embodiment.

Figures 1-2' In this embodiment the fuse holders are supported in the carrier in the nature of a frame of unitary one-piece construction which is guided.

to move with respect to the base in a rectilinear path, the various parts of the frame being immovable with respect to one another as the frame reciprocates to and from the base. The fuse holders do not move with respect to the carrier, until it is desired to re-fuse them, whereupon all but one of their connections with the carrier may be broken, they then being rotated out of the .carrier to expose their fuse clip surfaces. A specific description will now be given.

The fuse holders I are connected by straps IGI to form a unit, and these straps are provided with pins I62 received in slots I62a of the bars I63 which have end lugs I64 disposed in slots I65 of the carriers I66. The bars I63 may be drawn inwardly by eccentrics I61 disposed in their ad-- jacent ends, these eccentrics being operated by the pivotal handle I68. Normally the bars lock the fuse holders to the carrier, but when drawn inwardly, the fuse holders are free of the carrier except at the pin and slot pivotal connections I89,

552,684, filed July 23,

ably disposed in slotted lugs I11, and are surrounded by coiled compression springs I18.

When the handles I13 are rotated towards the end of a unit, that is, from its on position, it moves its extension I14 out of straight line toggle forming alignment with part I15, pivoted to the carrier. The links I19 move upwardly beyond the horizontal and thereupon springs I18 act quickly to throw the carrier up to off position, this action being a quick break action. Reverse movement will furnish a quick make to the on position, as can be readily seen.

Now having described the embodiment disclosed, reference will be had to the, following claim for a determination of the scope of the inventions of this application, and it is to be understood that the said invention is to be limited, not

to the specific details herein set forth, but only by the scope of the claim which follows.

What we claim is:

In a switch, a base, a fuse carrying head for cooperation therewith, a. unitary carrier constructed in the nature of a frame, none of whose parts move relative to one another, means for guiding the carrier to move with respect to the 2.

base in a guided rectilinear path to and from the base, the head being pivotally connected to and pivotally supported by the carrier so as to move therewith, resilient means for holding the carrier stationary when the same has been withdrawn from the base, and latch means for latching the head to and rendering it immovable with respect to the carrier and releasable for permitting the head to move pivotally with respect to the carrier, when the carrier has been withdrawn from and is held withdrawn from the base, to expose the fuses of the head for refusing.

HARRISON J. L. FRANK.

JOSEPH A. MESSING. WILLIAM A. man.

up and down on the side 

